duel 44sbn jetting but for a 750 sx

i know there is a thread for this on the super jet but i need some help for my kawai 750
my set up is
duel 44 sbn with jetentics flame arrestors
pjs manfold with out a balance tube
v force reeds
ported cases
race logic sport ported cylinder
big bore sleaves
82mm forged pistions
mrd billiot girdle head (160 psi)
fpp 750 limited wet pipe

the carbs have 155 in both the high and low speed at the mo i havent tryed them yet and im a bit nervious about trying untested jetting on my new engine .
and help or advice would be cool as im itching to get on the water and try it out as its summer here in new zealand
 

felix5oh

Carajo,gringos apestosos
Location
Miami,FL
Don't be afraid,you'll know the first time you stand on it and chop the throtle.

Earlier this year i bought a superjet in Ohio and brought it to Florida. It had a 100LS and 135HS jets. It had problems. Ended up with 120LS and kept the 135HS jet in it. It's much better now.

I got a 701 with 170 compression,cool head, factory pipe and duel 44's.
Good luck.
Felix
 

waxhead

wannabe backflipper
Location
gold coast
im happy to help ypou if you want but i dont know where to start i can guess and then you will have to go from there with giving me details as to whats happening
 
thanks for the replays guys here is wot ive started with
105 low speed
125 high speed
2.3 needle and seat
95 gram spring (20psi pop off)
the frist ride yeasterday and it is blubbering down low when you take off and takes about 5 seconds to clear and then pulls like a school boy reading a play boy . i close the low speed screw up till 1/4 turn and this help a we bit . also when rideing if you blip the throttle a few times it loads up and starts missing for 5 seconds or so then clears and runs nice .
ive got some 100 low speed jets that im going to try next and some 95,s as well just in case . i wasnt going to change the high speed jets just yet as it does seem to run fine up top . hopfully im on the right track and advice or tips would be good
 

waxhead

wannabe backflipper
Location
gold coast
Interesting
i would raise the pop off before i changed the low speed jet

when you say your taking off i am guessing you are meaning fro0m an idle sort of thing

It sounds like you may have the fuel coming in to early
 
yeah its mainly when you are takeing off form the shore or when you fall off and a getting going again from deep water . it loads right up and misses . if you back off the throttle and then slowly open it up it clears and runs alright . it dosent hit raelly down low when rideing either kinda just slowly builds revs for a secon or two then comes on nice and strong and wont to keep revving .
so do you think i should judt chnge the spring or go to a smaller needle and seat wax
thanks for the help to im not that clued up on jetting yet butam learing
 
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